2 (x+1) +5 (x-1)=7
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2x + 2 + 5x - 5 = 7
2x + 5x = 7 + 5 - 2
7x = 10
x = 10/7
pronto
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Verified answer
2x + 2 + 5x - 5 = 7
2x + 5x = 7 + 5 - 2
7x = 10
x = 10/7
pronto